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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1993-5-6
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pubmed:abstractText |
The effect of pre-exposure of cultured mouse SR-1 cells to a low dose of gamma-rays on the induction of mutations at the hprt locus by subsequent high dose radiation or bleomycin was studied. When cells were pre-exposed to 0.01 Gy gamma-rays, the induction of mutations by a 3 Gy gamma-ray dose given 18 or 24 h later was significantly reduced as compared with those which did not receive the low dose pre-exposure. When cells were challenged with 5 or 10 micrograms/ml bleomycin for 12 h, which can produce double-strand breaks in DNA, instead of 3 Gy gamma-rays, a similar mutagenetic adaptive response was observed. We conclude that this resistance to radiation- or bleomycin-induced mutation is attributed to the induction of a DNA double-strand break repair mechanism.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Mar
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pubmed:issn |
0267-8357
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
8
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pubmed:geneSymbol |
hprt
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
109-11
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:7681929-Animals,
pubmed-meshheading:7681929-Bleomycin,
pubmed-meshheading:7681929-Cobalt Radioisotopes,
pubmed-meshheading:7681929-Drug Resistance,
pubmed-meshheading:7681929-Gamma Rays,
pubmed-meshheading:7681929-Hypoxanthine Phosphoribosyltransferase,
pubmed-meshheading:7681929-Mammary Neoplasms, Experimental,
pubmed-meshheading:7681929-Mice,
pubmed-meshheading:7681929-Mutagenesis,
pubmed-meshheading:7681929-Radiation Tolerance,
pubmed-meshheading:7681929-Tumor Cells, Cultured
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pubmed:year |
1993
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pubmed:articleTitle |
Cultured mouse SR-1 cells exposed to low dose of gamma-rays become less susceptible to the induction of mutagenesis by radiation as well as bleomycin.
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pubmed:affiliation |
Department of Biochemistry, Institute of Radiation Medicine, Beijing, PRC.
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pubmed:publicationType |
Journal Article
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